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30 October 1996 <br /> AGE-NC Project No 96-0266 <br /> Page 4 of 4 <br /> and sealing with tape Label and log samples on a chain-of-custody form <br /> 8 Store the samples under ice and transport the samples in a chilled container to a State- <br /> certified laboratory for analysis <br /> 9 Screen soil sample duplicates for the presence of volatile organics using a photo-ionization <br /> detector(PTD)pre-calibrated to isobutylene <br /> 10 Log borings in accordance with the unified Soil Classification System <br /> 11 Collect a ground water samples from the probe boring established within the forrner UST <br /> location in the street The ground water sample will be collected using a Geoprobe water <br /> sampling assembly The samples will be collected m40-ml,EPA approved VOA gals using <br /> a Geoprobe water sampling assembly <br /> 12 Backfill each probe boring using a concrete-bentonite slurry in the entire depth of the <br /> probing <br /> 13 Selected soil samples and ground water samples will be analyzed for total petroleum <br /> hydrocarbons quantified as gasoline (TPH-g), total petroleum hydrocarbons quantified as <br /> diesel (TPH-d), volatile womatics (benzene, toluene, ethyl benzene and total xylenes <br /> . BTE&X) and methyl teitiary butyl ether (MTBE) in accordance with the appropriate EPA <br /> methods if field observations indicate that other petroleum hydrocarbons are present, <br /> additional analysis may be necessary <br /> 43 REPORTING <br /> A report detailing the results of the investigation will be prepared The report will be in a forinat <br /> acceptable to the PHS-EHD and CVRWQCB The report will be reviewed and signed by a <br /> California Registered Geologist <br /> • <br />